This has little to do with rotaries in aircraft but......

On 10, Oct , at 8:08 AM, Rotary Engine wrote:

Any trailing arm, unless it's real pivot axis is perpendicular to the longitudinal
axis of the car, will jack. It is the height of the roll center that
counts. This is why I get paid the big bucks :)

Hi Paul,
Yes, I agree, but a lot of todays cars with trailing arms have the roll
center "low" as per your excellent diagrams.
What my previous post was correcting was that you implied that
Porsche, BMW in the 80s and VW, up to the early 90s, had swing axles
like the 300SL.
This is not the case, even VW stopped using them after 67 (barring
Mexico)
BR, Dave McCandless

If you make the real pivot perpendicular to the long axis you get
an infinite virtual pivot point and the roll center is then
at ground level where it should be. The new front drive VW is like that.

The trouble with any camber change what so ever (finite virtual pivot points)
is you have banked corners, aerodynamic vertical loads  and bumps. Form 1 cars
don't use camber change. They use anti roll bars to limit the roll to +- 2 degrees.

Paul Lamar ...No rotor no motor.

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